<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <style>
    body{
      margin: 0;
      padding: 0;
      background-image: url(../images/grid.png);
    }
    .box{
      width: 200px;
      height: 100px;
      background-color: skyblue;

      /* 形变 */
     transform: scaleX(2) scaleY(2);
     /* 简写 */
     transform: scale3d(2, 2, 1);
     transform-origin: 0 0;
    }
  </style>
</head>
<body>
  
  <div class="box">div</div>
</body>
</html>